Baking soda brighten teeth
Baking soda may remove some surface stain, but it cannot bleach internal tooth colour or replace fluoride toothpaste.
The short answer
Sodium bicarbonate is a mild abrasive used in some toothpastes to loosen external stain. It does not change colour within dentine or enamel. Tooth colour may come from surface deposits, dentine, trauma, medication, enamel development, decay, or restorations.
What can different tooth colours and marks indicate?
Tooth colour may come from surface deposits, dentine, trauma, medication, enamel development, decay, or restorations. Loose powders and aggressive scrubbing can wear surfaces or irritate gums.
How can you brighten teeth without rubbing on loose powder?
Use an oral-care toothpaste and brush gently with a soft brush rather than rubbing powder onto teeth. Have unusual colour changes examined before whitening.
Which tooth colour changes should a dentist assess?
Seek care for a single dark tooth, pain, rough pits, white or brown patches, bleeding gums, or colour change after injury.
Could whitening suit your teeth and dental restorations?
Ask whether the colour is stain, decay, enamel change, or internal discolouration and whether whitening fits your teeth and restorations.
Frequently asked questions
Can it whiten a crown?
It may clean deposits but does not change the intrinsic colour of crown material.
Why can whitening cause sensitivity?
Whitening agents can irritate the dentine-pulp complex, depending on the tooth and method.
Keep reading
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.